Effect of catalyst distribution and structural properties of anode porous transport electrodes on the performance of anion exchange membrane water electrolysis
| Autor: | Tetsuo Munakata, Hiroshi Ito, Masayoshi Ishida, Masato Ohashi, Satoshi Someya, Ruixiang Wang, Kai Inoguchi |
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| Rok vydání: | 2021 |
| Předmět: |
Electrolysis
Materials science Hydrogen Electrolysis of water Ion exchange Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology chemistry.chemical_element Overpotential Condensed Matter Physics Anode Catalysis law.invention Fuel Technology Membrane Chemical engineering chemistry law |
| Zdroj: | International Journal of Hydrogen Energy. 46:37757-37767 |
| ISSN: | 0360-3199 |
| Popis: | Anion exchange membrane (AEM) water electrolyzers are expected to be novel devices for hydrogen (H2) production that achieve high performance at low capital cost. The effect of catalyst distribution in anode porous transport electrodes (PTEs) on the performance of AEM water electrolysis is experimentally examined. Based on the analysis of the correlation between the PTE structure and the electrolysis performance, it was revealed that the surface catalyst coverage is related to the activation overpotential, and that the location and compactness of the catalyst layer (CL) affects the concentration overpotential. This suggests that the water diffusion through the membrane is related to the concentration overpotential, and that denser CLs can promote water diffusion and thus mitigate the concentration overpotential. Based on the electrolysis data with PTEs of different thickness, it was also revealed that decreasing the thickness of the anode PTE enables good performance with low catalyst loading. |
| Databáze: | OpenAIRE |
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